File Extension ADR

.ADR File

File extension: ADR
File type: Address Book

Notes about the ADR file extension:

To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened" (Windows 7) or "How do you want to open this file?" (Windows 10) if you double-click the file. There click on "More apps" and choose a suitable software to view such files on your PC or from email attachments.

The ADR file type is primarily associated with 'Address Book'.

Detailed information for file extension ADR:

Primary association: Address Book

Other applications associated with file type ADR:

  • Address Plus Database
  • After Dark (Random Screen Saver Module)After Dark was not updated to work with Mac OS 9 and is no longer marketed.
  • Opera (Default Bookmark File) by Opera Software ASAUsually seen as OPERADEF6.ADR and is automatically established with new profiles. This association is classified as Text. The Mime types used with this association are: text/plain.
  • Opera Web Browser (Bookmark File (Hotlist)) by Opera Software ASA The identifying characters used for this association are - Hex: 4F 70 65 72 61 20 48 6F 74 6C 69 73 74 20 76 65 72 73 69 6F 6E 20 32 2E 30 0D 0A 4F 70 74 69 6F 6E 73 3A , ASCII: Opera Hotlist version 2.0 Options:
  • Smart Address Address Book
  • XAIRON-Addy Address Manager Data File
File Identifier - TrID
'Identifying characters' used on are
provided by Marco Pontello from his TrID database

To change file associations press Windows Key + X and then Apps and Features > Default apps > Choose default apps by file type. Invalid file associations could be the result of underlying issues within your Windows PC.

Technical data

To view technical data on file-extension ADR click this link to expand/hide the additional area.

System Info for File Extension .ADR

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: RVS-ADR

ProgramID: Recovery
EXEFile: %ProgramFiles%\Recovery\ADPrtk5.exe

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